Analysis and discussion on desulphuration in ladle furnace at CSP

Desulphurizing reaction mechanism in ladle furnace was analyzed. Effecfion of slag compostion on sulfur distribution ratio and variation of sulfur content were studied. Optimal slag content range was presented: w(CaO):52 %-57 %,w(A1203):35 %-40 %, w(SiO2)≤6 %, w(FeO+ MnO)≤%. Through improving operation, w(S) in ladle furnace was reduced to≤0. 004 %. This can needs of low-sulfur steel and ultra-low-sulfur steel.